林产化学与工业2016，Vol.36Issue(5)：127-132,6.DOI:10.3969/j.issn.0253-2417.2016.05.019
小麦秸秆加压液化制备乙酰丙酸乙酯
Preparation of Ethyl Levulinate by Pressurized Liquefaction of Wheat Straw
摘要
Abstract
The liquefaction experiments were carried out using wheat straw as raw material, concentrated sulfuric acid as catalyst and ethanol as solvent.The composition of liquefied product was analyzed, and the effects of different conditions on conversion rate and yield of the target product ethyl levulinate (EL) were examined.The results showed that optimum liquefaction conditions was catalyst dosage 10%, reaction temperature 190 ℃, reaction time 60 min, and liquid solid ratio of 18∶1 (g∶g, the same below).Under the circumstances, the yield of EL was up to 18.11% with liquefaction ratio of 75%.Degradation of wheat straw during the reaction was confirmed by infrared spectroscopic analysis.The liquid product contained aldehydes, ketones, esters, phenols, acids, and some other oxygenates.It was found that cellulose was converted into intermediate, such as glucose, glucoside, ethoxymethyl furfural, et al.They can be further transformed into ethyl levulinate.关键词
麦秸/液化/乙酰丙酸乙酯/液化率/得率Key words
wheat straw/liquefaction/ethyl levulinate/liquefaction ratio/yield分类
化学化工引用本文复制引用
关倩,蒋剑春,徐俊明,王奎,冯君锋..小麦秸秆加压液化制备乙酰丙酸乙酯[J].林产化学与工业,2016,36(5):127-132,6.基金项目
"十二五"农村领域国家科技计划课题(2015BAD15B06) （2015BAD15B06）
国家自然科学基金优秀青年基金项目(31422013) （31422013）
